UUID Generator
Generate, validate, and inspect universally unique identifiers
Time-based
UUID V1
969ae580-6759-11f1-9d90-6baf76316a21
Random
UUID V4
06d55c18-939e-49fd-b1b3-db68fc656273
Name-based
UUID V5
91dd98e3-b09f-5085-aa3e-a4d0121199ba
Batch Generator
Version
UUID Validator
Paste a UUID to check if it's valid and identify its version.
UUID Versions Explained
Version 1
Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.
Version 4
Purely random. The most commonly used version — simple, private, and virtually zero collision probability.
Version 5
Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.